Home / 90,898.31-136,373.45-30,939.96

Finding the Fourth Proportional to 90,898.31, 136,373.45 and 30,939.96

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Solution

The fourth proportional to 90,898.31, 136,373.45 and 30,939.96 is: 46,418.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,898.31 : 136,373.45 = 30,939.96 : x
  2. Step 2: Convert to fraction form
    90,898.31/136,373.45 = 30,939.96/x
  3. Step 3: Cross multiply
    90,898.31x = 136,373.45 × 30,939.96
  4. Step 4: Simplify right side
    90,898.31x = 4,219,389,444.76
  5. Step 5: Solve for x
    x = 4,219,389,444.76/90,898.31
  6. Step 6: Final answer
    x = 46,418.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.